February 21, 2014
Yes! I've been using Docker since 0.1, and saw Solomon Hyke's presentation from PyCon 2013 being livestreamed.
I'm a Docker user and I have contributed a couple of enhancements to the Docker Registry, so I'd say I'm a 7/10.
CEO of Fishworks and maintainer of Deis, the open source Application Deployment Platform (a.k.a. PaaS)